Fluid pump



Dec' 3, 1929 v H. w. LANDENBERGER EVAL 1,738,375 FLUID EUMP Filed Nov. 19. 1925 2 Sheets-Sheet 1 wwf- Q,

Dec. 3, 1929.

H. W. LANDENBERGER ET AL FLUID PUMP Egg,- 5.

Patented ec.. 3, 1929i PATENT OFFICE EW 1'W'. lLNDENBERGE AND EARL CANNON', 0F PHlLADELPHlA, PENNSYLVANIA.,

Aillltll'm T0 MERIAN FLUID MUTQRS CMPMW', 0F PHlLADELCPHM, BENN- SYLWMKM., A. COBPGRATION F PENNSYLVANIA.

FLUIIID PUMP application led November ll sures, usually less than 100 pounds per square inch, inasmuch as the line contact of the vane with the stationary portion of the pump permits excessive leakage or slip at the higher ,b pressures.

@entrillugal pumps may be operated at the higher pressures but their discharge decreases with the increase in pressure, so that to obtain a rotary pump for high pressures, where- M in the discharge is substantially vindependent ol the pressure, a plunger pump must be used. y Due to the lubrication and packing problems, plunger pumps are usually limited to the use of oil or other viscous fluids, where m the viscosity issuch as to prevent excessive leakage past the pistons and valves, which are ot necessity without packing. 'The leakage,-

vvhich results trom the use of such packless plungers and valves, constitutes the lubricant lor the rubbing parts of the pumps. Water, however, may not be used in such pumps without packing, since excessive slip or leakage occurs at the higher pressures. y

An object of our invention, therefore, is to provide a rotary-plunger pump which shall be adapted to pump non-viscous fluids and which shall accomplish the above-noted desir-ed results.

Another object'of our invention is to provide a plunger construction, wherein the packing is pressed into engagement with the cylinder wall with a varying force depending upon the stroke. l

A further object of our invention is to provide a fluid motor, wherein the self-tightening packing of the plunger isy automatically lubricated during the operation of the motor. Other objects and applications of our in- L vention, as well as details of construction and operation, whereby our invention may be practiced, will appear, more fully hereinafter, when taken in connection with the accompanying drawing, wherein f i Fig. 1 is a longitudinalsectional view,taken on the line `I--I of Fig. 2;

19, 192%.. lterial llo. 70,129..

Fig. 2 is a transverse sectional view, taken on the line llll-ll of F ig. 1; and

Fig. 3 is a similar view but taken on the line lith-lll oit llig. 1.

ln the illustrated embodiment ot our invention shown in the drawing, a rotor 1 of a rotary-plunger pump comprises a barrel section 2 and a driving-shalt section 3. rlhese sections may be respectively supported by bearings d and 5 provided by a pair ot supporting plates 6 and 7 which are spaced to provide a chamber 8, tor reasons as will appear presently.

The bearing l comprises a tubular Hangs 9, which extends outwardly from the supporting plate 6 and is provided with suction and discharge passages 11 and 12, respectively. A ring 13 having port openings 1l and 15 in the oppositesides thereof is positioned intermediate an innersurface 16 ot the tubular dange 9 and an outer surface 17 oi' the barrel section 2. A set screw 18 is so mounted in said tubularl extension 9 as to secure the ring or slotted bushing 13 in a position where the port openings 14 and '15 are in alignment with the suction and discharge openings 11 and 12, respectively.

The running joint between the barrel section 2 and the slotted ring 13 may be packed by packing 19 positioned on opposite sides of said ring 13. lThe packing 19 may be held.

in place by bushings 20 and 21. These bushings may be clamped in position by plates 22, 23 and bolts 24.-, vthe latter extending through apertures 25 in the tubular extension 9, as shown in the drawing.

The portion of the barrel section 2 positioned in the chamber 8 may be provided with a plurality of angularly disposed cylinders 26, say, for example, three, as shown in Fig. 3. The several cylinders 26 are connected by a cylindrical Ilange 27, opposite sides 28 and1 29 of which slidably engage annular sections 30 and 31 of the spaced supporting plates 6 and -7, respectively. The wall section 30 is provided at its outer edge with a'transversely extending flange 32 which engages an annular recess 33 in the opposite wall section 31. The supportingmembers 6 and7 may be' clamped vin this position bybolts 34 which extend through ico -complementary flange portions 35 of the supporting plates 6 and The flanges 271-32 and the wall sections 30-31 thus define an annular chamber 36 which may be filled with spaced from the head part 38 to provide an annular recess 43 adapted to receive packing 44. This packin may be of any suitable material, such, or example, as grapliited flax, asbestos, or a rubber composition which may use water as a lubricant. The base of section 2.y

. 44, and. since said vpacking presents a smaller" the boring 42 is in communication w-ith the lubricating chamber 36 through an aperture 45 1n the body part 39 of the plunger 37,

whereby lubricating material may work through the aperture 45 and around the stem 41 to the packing 44. i

The plunger 37 may be reciprocated in the cylinder 26 by means of a slipper 46 which is movable over a cam surface 47 'formed on an inner side 'of the flange 32 constituting one Lwall of the lubricating chambery 36. The

slipper 46 maybe provided with a recess 48 .adapted Lto, receive the outer end of the plunger 37, whereby the same may be held in engagement therewith. The slipper 46 v is retained in engagement with the track or cam 47 by the lcentrifu al force acting on the plun erj37 andthe slipper 46,so that for one revo ution of the cyl-inder 26 the piston 37 passes through a suction strokel and -a disl charge stroke. The cylinder `26 is connected tov a longitudinally extending passage 49 having a transverse portion 51 terminating in an openin 52 in the surface of the barrel he .openings 52 of the several cylinders26 are so positioned with respect to the port o nin'gs 14-and 15 in the slotted ring .13, t at the suction and discharge strokesI of the several plungers 37 are proper- When power is supplied to the driving shaft sect-ion 3 ofthe-rotor 1 to cause the rotation ofd the barrel section 2 and the several cylinders 26,`the pistons 37 are reciprocated by thecam 47, causin a substantiallycontinuous passage of Huid-from the suction inlet opening 11 of the pump to the discharge outlet 12. v

., Assuming the plunger 37 shown inf Fig. 1

of the drawing to be kpassing through its .discharge stroke, the. pressure exerted o n the .plunger'lieadpart 38'reacts on thepacking yplunger 37 comprising an autopart, 39 also en f gages the wall of the cylinder` 26 and it is area than said head part 38and since the space occupied by the packing 44 is in communication with the lubricating chamber 36, the plunger parts 38 and 39 tendl'to move together and thereby presssaid packing 44 against the cylinder wall with a force suficient to prevent the passage of water or other fluid from the cylinder chamber to the lubricating chamber 36 around the plunger 37. When the discharge stroke is completed, the pressure on the packing 44 is relieved, so that -dui'ing the subsequent' suction stroke, the packing 44 slides easily inthe cylinder 26, moving outwardly under the action of centrifugal force.

While we haveshown.only one form of embodiment of our invention, for the purpose of describing the same and illustrating its principles of construction and operation, it is apparent that various changes and modiications may be made therein without de parting from the spirit. of our invention and we desire, therefore, that only such limitations shall be imposed thereon as are indicated in the appended claims or as are indi.

cated bythe prior art.

We claim: 1. In combination, a rotary cyl1nder,'a

plunger having relatively movable parts and packing, said parts being so movable duringthe pressure stroke as to cause said packing to engage the cylinder wall with a certain force,

said force being decreased during the suction stroke, said plun er being actuated at least in part by centri ugal force during the latter stroke. n

2. A cylinder having a piston provided with relatively movable parts, one of said parts having a boring provided with an aper- 'ture leading to the outside, the other of said parts having a projecting stem loosely positioned in said boring, and packing in such operative relation to said parts that when flirce is applied to'the apertured art to cause t e with the cylin'der wall. f

3,.,Tl1'e1combinationwith a rotary pump cylinder, of'fa piston having-'a plurality of relatively movable parts, means for causing said piston'to reciprocate in said cylinder, and packing so disposedwith respect to said relatively movable piston parts as to be pressed into engagement with the cylinder wall during one stroke of, said piston.

' 4. 'A fluid motor comprising a rotary cyl- `inder having a plunger provided with a` plurality of relatively inovable parts, means vfor causing said plunger to reciprocate in saidv cylinder when the latter is moved, and packing so disposed`V with relation to said relatively vmovable parts that said packing is pressed into engagement with the cylinder wall during the discharge stroke with a oerpistonv to move inwardly o said cylinaV der, said packing is pressed into engagement maaar/a y f tain torce and with a decreased torce'during the suction stroke..

5. A duid motor comprising a rotary cylinder provided with a plunger, having a plurality ot parts, onepart having a boring provided with an aperture, another part having a stein positioned in said'bolring, packing positioned intermediate said parts so as to be.

pressed into engagement with the cylinder wall upon a relative movement between the parts, and a lubricating compartment for receiving the apertured part oi said plunger, whereby lubricating material may work from said compartment to said packing.

ti. d duid motor comprising a rotary cylinder havingr a plunger providedtwith a plurality oit parts, packing interposed between at least two oit said parts so that when one part moves relative to the other said packing may be pressed into engagement with the cylinder wall, and a lubricating compartment tor rei ceiving the outer end ot said plunger and prohill vided with means tor causing the reciprocation ot said plunger, said compartment being in communication with Asaid packing, whereby lubricating material may work therefrom to said packing.

l. d rotary cylinder having a plunger, provided with a plurality of parts, one pant having a boring and an aperture eatending there- Vjtroiii to the outside of said plunger, another part having a projectin stem positioned in said boring', packing etween said parts adapted to be pressedl into engagement with the cylinder wall during the discharge stroke,

and means ltorming a lubricating compartment around the outer end oit said plunger,

whereby lubricating material may work through v.said aperture and boring to said packing, saidmeans also causing the reciprocation otsaid plunger in said cylinder.

8. The combination with a barrel provided with a transversely-extending cylinder, of a plunger'in said cylinder provided with selitightening and releasing cking, said barrel having a passage exten ing from said cylinder, and means constituting suction and discharge ports positioned inoperative relation to sald passage. Y

9. The` combination with a plunger having relativelyl movable parts and packing positioned therebetween, of means whereby .lubricant may be supplied to said packing upon the relative movement of said parts.

10.. The combination with a cylinderv and a plunger therefor having relatively movable parts and packing positioned between said parts se as to be forced during one stroke of the plunger into engagement with said cylinder, of means whereby said packing may be lubricated, said means being responsive to the relative movement of said plunger parts.

11. Incombination, a cylinder, a--plun er v therefor provided with 'relatively Inova le which is released during another stroke, and means whereby the relative movement ot said plunger parts may cause thek supply of lubricant to said packing..

iid

12. il cylinder having a plunger provided with relatively movable telescoping portions,

said plunger being provided with packing positioned between saidY portions so .as to have a varying ed'ectiveness for dderent strokes, and means responding to the movement ot at least one oit said plunger portions, where'- by lubricant may be passed between said telesco ing portions to said packing.

i3. n combination, a rotary pump cylinder, a reciprocatory plunger therefor having relatively movable parts, and packing positioned between said plunger parts so as to have a varying edectiveness.

ld. 'lhe combination with a pump cylinder, ot a plunger havin telescoping parts, and packing positioned between said parts so as to have a varying ed'ectiveness depending upon the stroke oi said plunger.

15. rlhe combination with a rotary pump cylinder, oit a plunger having relatively -movable telescoping parts, packing positioned between said parts so as to be actuated into engagement with the c linder wall with a certain torce during t e discharge stroke and with a decreased torce during the suction stroke, and means whereby lubricant may b e supplied to said packing upon the movement oit said plunger.

i6. The combination with a cylinder provided W-ith a plunger having relatively movable parts, one of said parts being` provided `with a recess, another of said parts having a stem slidably mounted in said recess, of packing so positioned between said parts that 1t may be alternately pressedagainst, and released from the cylinder wall when said plunger is reciprocated. f

17. The combination with a plunger comsal prisingfa body part and an automatically f adjustable head part, said body part having a recess, said head part having a stem port-ion slidably mounted in said recess, of acking positioned around the portion o said stem between said partsand alternately subected to increasing anddecreasing pressures y said automatically adjustable head part. 18,v A cylinder provided with. a plunger having relatively movable parts positioned to engage the cylinder wall, one part having 'a projecting stem; the other part having a boring in communication withv the' outside of said cylinder, and acking so positioned with respect to said p unger parts as to be successively compressed and released.

19. A fluid motor comprising a rotary pump cylinder having a plunger provided packing stro e.

extending into said cham r, aslip .ing chamber, lprovided with a lungerI extending into said v being provided wit lubricating' cham r, said plunger having an automatically adjustable art, and means whereby lubricant may wor from said chamber to said part upon a predetermined adjustment thereof.

21. In a pump, a casing, a rotary member positioned 1n said casing, said member and said casing forming a lubricant chamber, said member having a cylinder rovided with a plunger having a lplurality o relatively movable arts, said plunger extending into said chain er, a sli per in engagement with one' of the walls o said casing and apertured to receive the end of said plunger, and packing so positioned as to be pressed by sald parts into engagement with said cylinder wall under predetermined operating conditions, said packing being in-communication with said chamber-permitting the supply of lubricating material thereto from said chamber.

22.. A pum comprising a casing having a lubricatlng c amber, a rotary member-having a cylinder, said cylinder having a plunger provided with telescoping arts, said plun r or engaging the end of said plunger, sal casin being formed to constitute a trackfor sai packing operatively associated with said plunger parts so as to be movable into compressed and ex anded positions upon the movement of said plunger, of means whereby lubricant may be supplied to said acking upon the movement of said packing etween said positions.

26. The combination with a plunger having packing and means for causing the com ression and expansion thereof, of means W 1ereby lubricant may be automatically supplied to said packing upony said compression and expansion.

27. The combination with a plunger having packing and means whereby said packln may be alternatel subjected to and release from pressure, o means whereby lubricant may be supplied to said packing upon said pressure variations.

28. In a pump, the combination W1th a fpump plunger having different strokes, said plunger comprising a plurality of parts, and packlng positioned in operatlve relation t o said parts, one part beingadj ustable automatically with respect.- to another part in accordance with the stroke of said pump plunger,

whereby the pressure on the packing may be alternatel 'exerted and released.

H NRY W. LANDENBERGER. EARL CANNON.

slipper, whereby said plunger may be recip- 4 rocated, and packing positioned to be pressed by said parts into engagement with the cylinderwall under predetermined conditions, said packing being in communication with said lubricating chamber.

23. The combination with a cylinder hav- .I

inga'plunger provided with a plurality of relatively movable arts, one of the parts a recess and another part havinla stem positioned in said recess, of pac lng so disposed relative'to said parts that said acking may4 bel pressed against the wall o said cylinder with a varypressure ue to therelativemovement ofsaid Aer-hav1ng relatively movable ing force de ending upon the stroke of the ilunger, an

supplied to s'aid packing upon the operation of said plunger.

means w ereby lubricant may` v 24. The combination with a pum plunger havin relatively movable parts, o a pum' Lc lin er for said lunger tibned between said plunger arts so as to be alternatel' sublecte to. an released from plungenparts, 3 l

* 25. The combination with a'movable plung- Dme- 1nd and packing posli 

